An alignment device for a prosthetic limb to provide angular movement of the prosthetic limb in an anterior-posterior plane. In one non-limiting implementation, the power increase factor F is varied with the current total downlink transmitted power available for high speed downlink transmission. The cartridge is a container removable from the cabinet. The first voltage generator connects to the output terminal of the first operational amplifier and to a voltage limiter that is coupled with devices under protection. It likewise relates to a dye composition comprising, in a medium suitable for dyeing human keratin fibers, such a dye, a process using it, and also a multicompartment device.